Automatic umbrella with upwardly and downwardly thrusted push bu

Details Automatic umbrella with upwardly and downwardly thrusted push bu Automatic umbrella with upwardly and downwardly thrusted push bu

1992-09-08

1993-07-06

Chilcot, Jr., Richard E.

Tent, canopy, umbrella, or cane

Umbrella

Self-opening and closing

135 2533, 135 2541, 135 28, 135 39, A45B 2514

Patent

active

052245055

ABSTRACT:
An automatic umbrella includes: a central shaft, a plurality of umbrella ribs, an umbrella-opening spring, an umbrella-closing spring, and a control device having a push button which may be pushed upwardly for opening the umbrella and may be pushed downwardly for closing the umbrella for preventing a confusing or false operation when extending or folding the umbrella.

REFERENCES:
patent: 2725888 (1955-12-01), Haupt
patent: 3658077 (1972-04-01), Sato
patent: 3856030 (1974-12-01), Sato
patent: 4986294 (1991-01-01), Wu
patent: 5058613 (1991-10-01), Su et al.

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